What tech stack would you recommend for building a scalable Android social media app?

We’re planning to develop an Android social media app that can handle a large number of users as it grows. The app will include features like user profiles, real-time messaging, image/video uploads, news feed, notifications, and possibly live streaming in the future.

With these requirements in mind, which tools, frameworks, and backend technologies would you recommend specifically for Android app development to ensure scalability, performance, and maintainability?

If you could share your personal experience—such as challenges you faced or tech stack choices that worked well—that would be incredibly helpful.

Thanks in advance!